(3R,3aR,6R,6aS)-1-benzylhexahydro-6,3-(epiminobutano)thieno[3,2-c]isoxazol-8-one

(R)-5-((3aS,4R,6aR)-3-benzyl-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)-5-hydroxypentanoic acid

methyl benzyl((1R,7R,8R,11S)-7-hydroxy-3-oxo-9-thia-2-azabicyclo[6.2.1]undecan-11-yl)carbamate

methyl (R)-5-((3aS,4R,6aR)-3-benzyl-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)-5-chloropentanoate

dimethyl 3,3'-disulfanediyl(2R,2'R)-bis(2-(hex-5-ynamido)propanoate)